Cambodia · roaming cost calculator
Roaming Price Audit: What 10 Days of Data Cost in Cambodia
HelloRoam is the top pick for Cambodia: its 7-day unlimited plan costs $22.55, at full speed for the first 2 GB a day, against $84 for a week on AT&T's $12-a-day pass, a $61 gap, and Holafly ranks second on this site's rubric. HelloRoam takes checkout through Stripe, with Apple Pay and Google Pay, in 31+ currencies. Airalo covers 200+ destinations to HelloRoam's 185. HelloRoam's price is from its catalogue of 29 Oct 2026, rivals' from the 30 Oct 2026 price check; AT&T's rate was checked June 2026.
a 20GB travel eSIM at $28.80 and a $12 day pass are both dollar prices. HelloRoam settles in 31 currencies, so a non-dollar card can skip the 2 to 4 percent conversion on the eSIM side.
eSIM plans, price and coverage data, Cambodia
For a short trip to Cambodia, HelloRoam's smallest fixed plan is $3.99 for 1 GB over 7 days, on a local network. One day of AT&T roaming costs $12.
Get eSIMHolafly delivers the Cambodia eSIM QR code within minutes of payment. The plan activates on a local 4G LTE network on arrival — no SIM swap, no roaming toggle.
Get eSIMNomad's per-GB rates are most competitive in Southeast Asia and popular tourist routes. In Cambodia, 4G LTE data at $2.30/GB is among the lower per-GB rates in the market.
Get eSIMAiralo sells 4G LTE access in Cambodia from $2.40/GB. Airmoney cashback returns 5-10% of your spend to use on the next trip.
Get eSIMSaily's Cambodia plan sells 4G LTE access. VPN toggle and eSIM management live in one privacy-focused app — no separate NordVPN install needed.
Get eSIMCompare providers: Airalo vs Holafly · Airalo vs Saily · Airalo vs Nomad · Airalo vs HelloRoam · Holafly vs Saily · Holafly vs Nomad · Holafly vs HelloRoam · Saily vs Nomad · Saily vs HelloRoam · Nomad vs HelloRoam
The full picture
Published carrier rates on travel data, Cambodia
Every major carrier's published Cambodia rate, side by side, with the eSIM winner highlighted.
| Carrier | Plan type | Daily | 7-day | Speed | Data limit |
|---|---|---|---|---|---|
| AT&T | International Day Pass | $12.00source | $84.00 | LTE | Plan data |
| Verizon | TravelPass | $12.00source | $84.00 | LTE | Plan data |
| T-Mobile | International Pass | $10.00*source | $50.00 | LTE | 2GB per 1 Day pass |
| eSIM · HelloRoam | 20GB data plan | — | $28.80 | 4G LTE | 20GB |
*T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. The 1 Day International Pass costs $10; the 7-day figure is the cheapest pass mix, 10-day pass.
Compare all carrier roaming plans to see how AT&T, Verizon, T-Mobile, Vodafone, and EE stack up against eSIM providers.
Pay-per-use cost audit
Cambodia data bill scenarios: AT&T without a day pass
AT&T's international pay-per-use rate is $2.05/MB in Cambodia. Mixed phone use — maps, messaging, and social media — runs about 60 MB/hour. One hour of that: $123. Four hours of normal use: $492. Eight hours, a full day out: $984. A 30-minute Zoom meeting alone adds $922. A 5-minute video call with family costs $154. These are AT&T's published pay-per-use figures. Source: AT&T international rate card, June 2026.
Personalize your savings
Your Cambodia saving against $12 a day
Adjust the trip length, the carrier and the daily data below and the calculator reprices both sides. The starting point is the 10-day average stay recorded for Cambodia: $120 on an AT&T day pass at $12 a day, against $28.80 for a 20GB travel eSIM. Both prices buy access to the same local operators.
Network coverage
Cambodia LTE and 5G coverage breakdown
Metfone is the only mobile network in Cambodia. Every roaming and eSIM connection goes through the same towers. AT&T charges $12/day for that access. An eSIM charges $1.44/GB. The coverage map for AT&T roaming in Cambodia and the coverage map for a travel eSIM are both drawn by Metfone. They are the same map. 4G LTE download and upload speeds are available on a local network in Cambodia. A carrier roaming pass delivers those speeds. A travel eSIM delivers the same speeds. Paying $12/day does not increase your download speed over the $1.44/GB eSIM rate. Cambodia has none 5G coverage. No commercial 5G
Network attachment record
The networks behind both prices in Cambodia
HelloRoam publishes 2 local operators for Cambodia: Cellcard and Metfone.
An eSIM attaches to one of them on arrival.
HelloRoam names no default, so the file cannot say which one your handset picks.
HelloRoam records no 5G operator for Cambodia.
Carrier roaming runs on local operators too. That is what a roaming agreement buys.
Same masts, two invoices. The gap on this page is a billing gap.
5G and 4G here are capability labels. Neither one is a speed reading.
The operator file behind this page covers 185 destinations and 154 operators, 98 of those destinations carrying a 5G label. Cambodia is one of 68 destinations with more than one operator on file: Cellcard and Metfone. Carrier roaming reaches the same radios, so the gap between the two prices is a billing gap.
| Operator | Network generation on file |
|---|---|
| Cellcard | 4G |
| Metfone | 4G |
Source: HelloRoam package feed, read 17 August 2026. The feed publishes an operator list for every destination it sells. No speed test sits behind this table, and we ran none. The full operator map covers 185 destinations.
Pricing breakdown
Carrier rates vs eSIM prices in Cambodia
Here is the 14-day cost breakdown for Cambodia. AT&T International Day Pass: $12 per 24 hours, $120. Verizon TravelPass: $168. T-Mobile International Passes: $75 (30-day pass). eSIM 10GB plan on a local network: $14.40. That is $105.60 less than AT&T, a 88% reduction for the same 4G LTE connectivity.
T-Mobile's International Pass in Cambodia costs $10/day, the lowest daily rate of the three major US carriers. AT&T is $12/day. Verizon is $12/day. An eSIM on a local network averages $1.03/day when you buy the 10GB plan upfront.
Choosing the right eSIM tier for Cambodia depends on trip length and daily habits. Available tiers: 1GB at $3.99 ($3.99/GB), 3GB at $7.99 ($2.66/GB), 5GB at $11.49 ($2.30/GB), 10GB at $18.90 ($1.89/GB), 20GB at $28.80 ($1.44/GB). A 1.5 GB/day user on a 14-day trip needs roughly 21GB. The unlimited daily option at $2.93/day works out to $40.99 total.
Unlimited data for Cambodia starts at $3.66 for 1 day and runs to $74.66 for 30, priced 1 day at $3.66, 3 days at $10.43, 7 days at $22.55, 14 days at $40.99, 30 days at $74.66. Unlimited here means 2GB a day at full speed before a fair-use policy applies. Catalogue prices read 29 Oct 2026.
Trip cost breakdown
Carrier roaming vs eSIM cost in Cambodia by trip length
If you visit Cambodia for 3 days and need 2GB for maps and messaging: AT&T charges $36 ($12/day x 3 days). A 3GB eSIM on a local network costs $7.99. You save $28.01.
If you visit for 14 days with 15GB of photos and video calls: AT&T reaches $120 per line, at most 10 daily fees each bill cycle. A 20GB eSIM on a local network covers the same stay for $28.80 — $91.20 less, a 76% reduction.
If you stay 30 days and need 50GB for video calls and streaming: AT&T totals $120 over the month, its cap of 10 daily fees in one bill cycle. A 50GB eSIM on a local network costs $72. You save $48 (40%). Rates checked June 2026.
Airport options
SIM card at Phnom Penh (PNH) / Siem Reap (SAI) vs eSIM
Airport kiosks in Cambodia quote SIM card prices before taxes and activation fees. After the counter adds those costs, your final bill is higher than the posted rate. A 1GB eSIM at $3.99 is an all-in price — what you see online is what you pay. No register surprise after a long international flight.
Data planning
7-day Cambodia data budget breakdown
Plan for 1.5 GB of data per day in Cambodia. Navigation, messaging, and photo sharing consume most of it. A 7-day trip needs roughly 11GB.
For a 7-day trip, the 20GB plan at $28.80 covers 11GB at $1.44/GB. AT&T's roaming pass for the same 7 days reaches $84. For heavy data users, a 1-day unlimited plan costs $3.66, still under AT&T's $12/day pass.
Connectivity
Cambodia WiFi access and cellular backup
Public WiFi networks in Cambodia exist in major cities. Most do not require registration but offer no encryption. For banking apps, work VPNs, and payment authentication, a cellular eSIM connection on a local network is the safer path. Plans start at $1.44/GB.
Plan your data
How much data you need in Cambodia
Cellcard is one of Cambodia's network operators. AT&T pays Cellcard a wholesale rate for roaming access, then bills you $12/day. Travel eSIM providers also access a local network and charge $1.44/GB at retail. For a 10-day trip: AT&T $120, eSIM $28.80.
Cambodia has one mobile operator: Metfone. US carriers pay Metfone for roaming access and pass that cost to you at $12/day. An eSIM connects to Metfone directly at $1.44/GB — no carrier markup.
Airport SIM counters at Phnom Penh (PNH) / Siem Reap (SAI) charge $2-5 for 5-20GB / 28 days — still more than a 20GB eSIM at $28.80. WiFi in Cambodia is available in hotels and cafes. An eSIM fills the gaps at $1.44/GB instead of AT&T's $12/day roaming charge. Local prices in Cambodia are in KHR (៛), but eSIM plans are priced in USD, eliminating exchange rate uncertainty on your data costs.
Quick reference
Cambodia Travel Essentials
117/118/119
117, 118, 119 are the emergency numbers in Cambodia. Different numbers may route to different services — save all of them before your trip. Emergency calls work from any mobile device, including travel eSIMs.
Type A/C/G
US plugs (Type A flat two-prong and Type B three-prong) fit Cambodia's outlets directly. No adapter is needed for phones, laptops, or standard US electronics. Voltage is 120V — compatible with dual-voltage US chargers.
ICT (UTC+7)
KHR (៛)
Cards are accepted at hotels, tourist-facing shops, and chain restaurants in Cambodia. Local markets, small vendors, and rural businesses prefer cash. Withdraw KHR at an ATM on arrival — airport ATMs have the same rates as city ATMs.
Quick tip
Prices in Cambodia are in KHR (៛). Buying an eSIM in USD before departure removes the variable of exchange rates affecting your data cost mid-trip.
Good to know
Power sockets in Cambodia are Type A/C/G type. US and UK plugs don't fit without an adapter. A depleted phone ends your eSIM connectivity regardless of remaining data balance.
Step by step
How to add a Cambodia eSIM to your phone
- Check your phone supports eSIM (iPhone XS or newer, most Samsung Galaxy S20+) — LTE coverage is none on Cellcard
- Pick a 1GB Cambodia plan on HelloRoam for $3.99 — payment takes under two minutes and your QR code arrives instantly. Compare providers if you want to see alternatives first.
- Install the eSIM via the QR code HelloRoam sends to your email — do this before your flight to Phnom Penh (PNH) / Siem Reap (SAI) so it activates the moment you land
- On iPhone: tap Settings > Cellular, select your carrier SIM (not the HelloRoam eSIM), tap Cellular Data Options, and set Data Roaming to off. Full instructions with screenshots in the data roaming guide.
- On Samsung Galaxy at Phnom Penh (PNH) / Siem Reap (SAI): open the notification shade, tap the SIM switcher, and select your HelloRoam eSIM — Cellcard registers automatically
- On Google Pixel: go to Settings > Network > Calls and SMS > WiFi Calling and enable it — your home number stays reachable in Cambodia without any voice roaming charge
Data tips
Cambodia data efficiency guide
Currency converter apps use under 1 MB per session. Bank apps with push notifications use minimal background data. The higher risk is two-factor authentication: your bank may send a code to your home number, which requires cellular reception or call forwarding. Test your bank's 2FA method before traveling to Cambodia.
Regional context
Cambodia and Asia cross-border data costs
A few things to know before turning off carrier roaming in Cambodia:
Cambodia SIM registration: Passport required. A travel eSIM purchased abroad bypasses local SIM registration requirements at the point of sale.
Cambodia uses USD alongside Cambodian riel
Metfone (Viettel) has widest coverage
Incredibly cheap mobile data — under $3 for 15GB
Nearby
Related destinations
6 destinations near Cambodia are priced on the same rate card. AT&T bills $12 a day in every one of them, and the figure beside each flag is that destination's own per-gigabyte floor. The cheapest of the group is Bangladesh at $1.25 a gigabyte.
Forgot your eSIM?
Cambodia eSIM installation after arrival: the WiFi route
If you reach Cambodia without an eSIM, your first 30 minutes at the airport determine your data costs. Phnom Penh (PNH) / Siem Reap (SAI)'s arrivals area has free WiFi. Connect immediately — no queue, no counter. From there, HelloRoam, Holafly, Nomad, Airalo, and Saily all support post-arrival eSIM purchases. The process: download the app over WiFi, choose a Cambodia plan, scan the QR code, and activate. A 1GB plan on a local network costs $3.99, against $24 for two days on AT&T's International Day Pass. If airport WiFi drops mid-install, hotel lobby WiFi provides a stable fallback for finishing the process.
Savings math
How much you save in Cambodia
Solo traveler
A solo traveler on AT&T International Day Pass in Cambodia for 10 days: 10 days × $12/day = $120. A 20GB eSIM on a local network costs $28.80 for the same 10 days. Savings: $91.20 (76%). Both options connect to local 4G LTE towers. The arithmetic is simple: one fixed payment versus 10 daily charges.
Family trip
A family that takes two international trips per year saves $369.60 annually by switching from AT&T roaming to eSIMs. Per trip: AT&T bills $300 for 4 lines over 10 days ($12 for the first line and $6 for each extra line, per day billed). Four eSIMs cost $115.20 per trip. Over five years, the cumulative savings reach $1848.
AT&T roaming rate analysis
AT&T bills International Day Pass per line, not per account. A family plan with 4 lines in Cambodia: $12 for the first line and $6 for each of the other three = $30/day. For 10 days: $300. Even lines that barely use data still trigger the full daily charge. A child's phone syncing a game update overnight starts a $6 extra-line fee for that line. Four 20GB eSIMs: $115.20 total. Savings for the family: $184.80.
All-carrier summary
AT&T: AT&T International Day Pass costs 317% more than an eSIM for Cambodia.
Verizon: Verizon TravelPass costs 317% more than an eSIM for Cambodia.
T-Mobile: T-Mobile's International Passes cost 74% more than an eSIM for Cambodia.
The savings math for Cambodia is clear. Solo: $91.20 saved vs AT&T for 10 days. Family of four: $184.80 saved. Annual (2 trips): $182.40 saved. All figures use the same local 4G LTE network. The eSIM costs less at every trip length and every group size.
Quick answers
Common questions about Cambodia data costs
Is eSIM cheaper than roaming in Cambodia?
In Cambodia, a travel eSIM on a local network costs $28.80 for 20GB over 10 days. AT&T roaming charges $12 a day, $120 for the same duration on the same towers. The eSIM cuts the data bill by 76%. This applies to both AT&T and Verizon, which charge the same $12/day rate. Rates checked June 2026.
How much does roaming cost in Cambodia?
AT&T charges $12/day in Cambodia. A 7-day trip costs $84. A 14-day trip costs $120. A 10-day trip costs $120. An eSIM alternative on a local network starts at $28.80 for the same network. Rates checked June 2026.
Does T-Mobile work in Cambodia?
Yes, within the plan's allowance. T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. At 256Kbps Google Maps and ride-hailing apps stall. T-Mobile's 1 Day International Pass costs $10 for 2GB, and a week of passes $50 (10-day pass). A travel eSIM on a local 4G LTE network costs $28.80 for 20GB over 10 days. Rates checked June 2026.
AT&T fine print for Cambodia
$12 covers 24 hours from the first time your phone uses a foreign network, and a single background push notification at 2 AM can start it. AT&T bills at most 10 daily fees per line each bill cycle (terms read 31 Oct 2026).
iCloud Photos, email push, app updates all trigger the daily charge. A phone left in a bag with data roaming on starts a new $12 fee each time a sync lands after the last 24 hours ran out.
Cambodia FAQ
Cambodia eSIM & roaming questions
Cambodia carrier roaming costs $12 a day on AT&T and on Verizon
AT&T: $12/day, or $84 a week. Verizon: $12/day. T-Mobile: 5GB or 15GB of high-speed data included on Experience plans, then at a reduced speed, or $10 for a 1 Day pass with 2GB. Travel eSIM on a local network: from $3.99 for 1GB. On the median 5 GB plan, fixed rates run from $2.01/GB on HelloRoam to $2.60/GB on Saily. HelloRoam's 7-day unlimited plan has the lowest median of the five at $21.50 across 35 countries, against $27.50 on Holafly. Every option above routes through the same local towers in Cambodia. Difference for 7 days against AT&T on that HelloRoam plan: $62.50. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
T-Mobile's included data in Cambodia runs at high speed until the allowance ends
Not past the allowance. T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. A photo message runs 2 MB to 4 MB, about two minutes at 256Kbps, so it drags from Cambodia. A travel eSIM delivers full 4G LTE on a local network from $1.44/GB, and HelloRoam at $2.01/GB holds the lowest median 5 GB rate in the market, Nomad next at $2.30. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
Cambodia roaming bills by the day, not by the gigabyte
Relying on hotel WiFi does not prevent roaming charges in Cambodia. AT&T's per-day charge fires from any background cellular contact — your phone does not need an active app, just a brief tower handshake. Per-MB billing at $2.05/MB is even more dangerous with background syncs. T-Mobile sidesteps per-day billing up to its plan's high-speed allowance, then runs at up to 256Kbps. A travel eSIM at 1GB for $3.99 gives you full 4G LTE and locks the total cost before you board.
Coverage lists decide which provider suits a Cambodia trip with extra stops
HelloRoam is the top pick when every stop is on its list: it sells Cambodia among its 185 destinations and holds the lowest median 5 GB rate here, $2.01/GB. For a route that adds stops, check each list before the price: Airalo reaches 200+ destinations, Nomad 200 and Holafly 200+. This site states no Saily count. That breadth is worth paying for only when the itinerary is still moving. A regional plan covering several countries in one bucket beats one plan per stop. AT&T sidesteps the question by charging $12 per 24 hours in every country alike, which is simple and expensive: three countries over nine days still bills $108. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
Over-buying data for Cambodia costs less than a mid-trip top-up
Over-buy, slightly. No travel eSIM rolls unused data into your next trip, so a 5 GB plan with 2 GB left is 2 GB you paid for and lost. Under-buying costs more. A mid-trip top-up carries no bulk discount, and it lands exactly when you are standing somewhere without a connection to buy it. One size up on Cellcard costs about $2.88 at $1.44/GB, which is less than one AT&T roaming day at $12. Carrier plans give nothing back either. If you cannot estimate usage at all, an unlimited plan removes the guess: $21.50 for 7 days on HelloRoam, the lowest median of the five, or $27.50 on Holafly. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
The three US carriers price Cambodia roaming on different terms
None of the three US carriers offer a genuinely good deal in Cambodia. AT&T: $12/day. Verizon: $12/day. T-Mobile: 5GB or 15GB of high-speed data included on its Experience plans, then up to 256Kbps, or $10 for a 1 Day pass. A travel eSIM on Cellcard starts at $1.44/GB — a 7-day trip at average usage costs $15.12 versus $84 for AT&T. No carrier matches the eSIM on per-GB cost.
A week of Cambodia data costs $84 on AT&T
AT&T International Day Pass: $12/day, $84 for 7 days. Verizon TravelPass: $12/day, $84. T-Mobile International Pass: $10/day, $50. The base T-Mobile tier costs nothing but runs too slow to be usable. Against T-Mobile's $10/day pass, a travel eSIM on Cellcard runs roughly $15.12 for 7 days at 1.5 GB/day average usage. The eSIM is 80-90% cheaper than any paid carrier option.
Local Cambodia apps run on a travel eSIM without a local SIM
Most local apps in Cambodia — ride-hailing, food delivery, transit — do not require a local SIM number to function. They require only a data connection, which a travel eSIM provides at $1.44/GB on a local 4G LTE network. Some banking and two-factor authentication apps require a local phone number for SMS verification. For those cases, keep your home SIM active alongside the eSIM — your home number handles SMS while the eSIM handles data.
One eSIM can cover a multi-country Asia route including Cambodia
Multi-country Asia eSIM plans exist and cover many combinations — Japan, South Korea, Thailand, Singapore, and others in a single data bucket. AT&T and Verizon charge $12/day in each country separately, so a 3-country trip at 3 days each costs $108. A regional Asia eSIM for the same 9 days runs $15-$40 total. Check plan coverage maps — Cambodia may be included in a regional plan, or you may need a Cambodia-specific plan plus a regional one.
A week of Cambodia carrier roaming costs $84
AT&T: $84/week (International Day Pass at $12/day). Verizon: $84/week (TravelPass). T-Mobile: 5GB or 15GB of high-speed data included on its Experience plans, then up to 256Kbps, or $50 for a week of passes (10-day pass). The cheapest eSIM for Cambodia starts at $1.44/GB on a local 4G LTE network — better per-GB value than all three carriers.
Fact check
Debunking carrier roaming claims for Cambodia
You need to unlock your phone to use an eSIM
eSIM installation does not require an unlocked phone in most cases. iPhones sold in the US since iPhone 14 are sold unlocked by law. iPhones XS through 13 require unlocking to add a foreign carrier eSIM, but AT&T, Verizon, and T-Mobile all offer free unlocking after your contract ends. Samsung Galaxy S20 and newer models support eSIM on both locked and unlocked variants. Check your carrier's unlock policy before your trip to Cambodia.
Roaming charges only apply to data
US carrier international plans charge separately for data, calls, and texts. AT&T's International Day Pass at $12/day includes data but charges $0.25–$1.50/minute for calls beyond the bundled allocation. Incoming voicemail retrieval can trigger per-minute roaming charges even when you make no outgoing calls. A data-only eSIM in Cambodia at $3.99 covers data and uses WhatsApp or FaceTime for voice at no additional carrier cost. Rates checked June 2026.
EU roaming is free for Americans
EU roaming-within-the-EU rules apply only to SIM cards issued by EU-based carriers. AT&T and Verizon are US carriers — they charge full international day pass rates in every EU country. AT&T's International Day Pass runs $12/day in EU destinations. Verizon TravelPass is $12/day. A travel eSIM on a local network covers Cambodia for $3.99 total. Rates checked June 2026.
Our recommendation
Final Cambodia data cost breakdown
If you want the most straightforward option for Cambodia, go with HelloRoam. HelloRoam covers Cambodia on a local network and scores 9.9/10 on our rubric, the highest of the 5 providers we price. A 1GB plan costs $3.99. Unactivated plans are refundable for 180 days, and its support replies in your own language. Holafly is the alternative for heavy data users: it states no daily cap, at a 7-day unlimited median of $27.50 on 30 Oct 2026.
Learn more
Travel guides, Cambodia
4 guides carry the parts of a Cambodia trip this page does not price: installing the profile before departure, switching data roaming off on the home SIM, and what happens to the allowance once a fair-use policy applies. Each one reads the same rate card as this page, where AT&T bills $12 a day.
AT&T charges $12/day in Cambodia. An eSIM plan costs $28.80.
You do not need a new carrier plan for Cambodia. Buy an eSIM, scan the QR code, and your phone is online for $28.80.
Get a Cambodia eSIM